.box_card{
    width: 800px;
    margin: 20px auto;
}

/*课程管理*/
#from_box{
    width: 700px;
    margin: 10px auto;
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
    border: rgb(230,230,230) 1px solid;
}
#from_box .from_title{
    height: 45px;
    line-height: 45px;
    background: rgb(242,242,242);
    font-size: 18px;
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
    margin-top: 0;
    font-weight: bolder;
}
#from_box .from_title span{
    margin-left: 20px;
}
.layui-form-item{
    width: 600px;
    margin: 20px auto;
}
.submit_style{
    margin-left: 38px;
}
.add_style{
    height: 25px;
    padding: 5px 5px 15px 15px;
    line-height: 16px;
}
.layui-btn .layui-icon{
    display: block;
    margin-right: 10px;
}
.layui-tab-title li a{
    text-decoration: none;
    color: rgb(102,102,102);
}
.layui-form-label{
    margin-left: 22px;
    width: 86px;
}
#edit_but,#del_but{
    text-decoration: none;
}

/*视频管理*/
.video_Manage{
    width: 700px;
    margin: 10px auto;
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
    border: rgb(230,230,230) 1px solid;
    position: relative;
}
.video_Manage .from_title{
    height: 45px;
    line-height: 45px;
    background: rgb(242,242,242);
    font-size: 18px;
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
    margin-top: 0;
    margin-bottom: 70px;
    font-weight: bold;
}
.video_Manage .from_title span{
    margin-left: 20px;
}
.content_box{
    width: 500px;
    margin: 20px auto;
    padding-bottom: 40px;
}

.but_box{
    width: 700px;
    height: 40px;
    position: absolute;
    bottom: 0;
    background: rgb(242,242,242);
}
.layui-btn-radius{
    width: 70px;
    height: 30px;
    line-height: 30px;
    text-align: center;
    font-size: 6px;
    margin-left: 18px;
    padding-left: 11px;
    position: absolute;
    top: 5px;
}
.video_little_box{
    width: 500px;
    border: rgb(230,230,230) 1px solid;
    border-radius: 10px;
    padding-bottom: 60px;
    position: relative;
}
.video_little_box .layui-form-item{
    margin: 20px auto;
    width: 400px;
}
.video_little_box .video_del_box{
    width: 500px;
    background: rgb(242,242,242);
    height: 40px;
    position: absolute;
    bottom: 0;
}
.video_del_box #video_del{
    width: 75px;
    height: 28px;
    line-height: 28px;
    border-radius: 5px;
    background: rgb(142,191,67);
    color: rgb(255,255,255);
    font-size: 12px;
    text-align: center;
    text-decoration: none;
    border: none;
    margin-top: 6px;
    margin-left: 10px;
}